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SQL how to store meaningful null values?

score 226 · Answer 1 · 2023-03-15T08:32:09.247000

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SQL how to store meaningful null values?

226 views Asked by Starbuck At 15 March 2023 at 08:32

score 91 · Answer 2 · 2022-04-02T20:18:03.573000

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score 473 · Answer 3 · 2022-01-25T04:31:53.323000

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Spark Scala : Check if string isn't null or empty

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score 695 · Answer 5 · 2019-07-11T03:41:23.507000

Can anyone tell me why my case statement return null(good)

695 views Asked by user11462075 At 11 July 2019 at 03:41

score 1341 · Answer 6 · 2018-09-04T09:26:26.967000

compare three variables and get the variable with min/max value back (not value)

1.3k views Asked by NECben067 At 04 September 2018 at 09:26

score 398 · Answer 7 · 2018-08-27T12:14:34.777000

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score 98 · Answer 8 · 2018-05-02T22:32:23.563000

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98 views Asked by Yoni Zohar At 02 May 2018 at 22:32

score 326 · Answer 9 · 2017-12-23T15:06:43.403000

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326 views Asked by AlexDarkVoid At 23 December 2017 at 15:06

score 1095 · Answer 10 · 2017-04-10T10:43:19.793000

Why is `NOT(NULL=NULL)` false?

1k views Asked by Brondahl At 10 April 2017 at 10:43

score 102 · Answer 11 · 2017-02-06T12:13:39.813000

SQL that check for Duplicates with NULL doesn't not return

102 views Asked by Need Help At 06 February 2017 at 12:13

score 8800 · Answer 12 · 2016-12-16T08:58:05.993000

Is SQL unknown identical to NULL?

8.8k views Asked by Michael Tsang At 16 December 2016 at 08:58

score 9406 · Answer 13 · 2015-05-29T21:20:17.893000

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9.4k views Asked by John Smith At 29 May 2015 at 21:20

score 447 · Answer 14 · 2015-03-03T09:44:30.390000

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score 901 · Answer 15 · 2014-06-03T16:54:57.573000

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score 923 · Answer 16 · 2014-01-24T09:51:47.953000

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1.4k views Asked by Sophie Pocket At 25 April 2012 at 12:19

score 1712 · Answer 18 · 2010-06-20T16:01:22.213000

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1.7k views Asked by stakx - no longer contributing At 20 June 2010 at 16:01

score 407 · Answer 19 · 2009-06-16T16:53:12.257000

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407 views Asked by Brann At 16 June 2009 at 16:53

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21.9k views Asked by JamesEggers At 23 January 2009 at 18:25

TechQA.

List Question

SQL how to store meaningful null values?

SQLthree valued logic - do de Morgan's laws apply?

A three-valued boolean logic with Z3 solver

Spark Scala : Check if string isn't null or empty

Can anyone tell me why my case statement return null(good)

compare three variables and get the variable with min/max value back (not value)

NOT IN does not produce same results as NOT EXISTS

Implementation of SQL's three-valued logic

Logical operations in modal three-valued logic (XOR, IMP EQV)

Why is `NOT(NULL=NULL)` false?

SQL that check for Duplicates with NULL doesn't not return

Is SQL unknown identical to NULL?

Example of three valued logic in SQL Server

All possible combinations of Three-valued logic values

Numeric comparisons with NA values causing bad subsets in R

OData request that returns items not matching the filter

How to apply 3-valued-logic to SQL queries?

Options for eliminating NULLable columns from a DB model (in order to avoid SQL's three-valued logic)?

How should I test a field against an SQL variable which can be null?

SQL 'Or' operator. How does it work in the following scenario?

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